/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_drawinglayer.hxx"

#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <basegfx/tools/canvastools.hxx>

//////////////////////////////////////////////////////////////////////////////

using namespace com::sun::star;

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
	namespace primitive2d
	{
		BasePrimitive2D::BasePrimitive2D()
		:	BasePrimitive2DImplBase(m_aMutex)
		{
		}

        BasePrimitive2D::~BasePrimitive2D()
        {
        }

		bool BasePrimitive2D::operator==( const BasePrimitive2D& rPrimitive ) const
		{
			return (getPrimitive2DID() == rPrimitive.getPrimitive2DID());
		}

		basegfx::B2DRange BasePrimitive2D::getB2DRange(const geometry::ViewInformation2D& rViewInformation) const
		{
			return getB2DRangeFromPrimitive2DSequence(get2DDecomposition(rViewInformation), rViewInformation);
		}

		Primitive2DSequence BasePrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
		{
			return Primitive2DSequence();
		}

		Primitive2DSequence SAL_CALL BasePrimitive2D::getDecomposition( const uno::Sequence< beans::PropertyValue >& rViewParameters ) throw ( uno::RuntimeException )
		{
			const geometry::ViewInformation2D aViewInformation(rViewParameters);
			return get2DDecomposition(aViewInformation);
		}

		com::sun::star::geometry::RealRectangle2D SAL_CALL BasePrimitive2D::getRange( const uno::Sequence< beans::PropertyValue >& rViewParameters ) throw ( uno::RuntimeException )
		{
			const geometry::ViewInformation2D aViewInformation(rViewParameters);
			return basegfx::unotools::rectangle2DFromB2DRectangle(getB2DRange(aViewInformation));
		}
	} // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
	namespace primitive2d
	{
		Primitive2DSequence BufferedDecompositionPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const
		{
			return Primitive2DSequence();
		}

		BufferedDecompositionPrimitive2D::BufferedDecompositionPrimitive2D()
		:	BasePrimitive2D(),
            maBuffered2DDecomposition()
		{
		}

		Primitive2DSequence BufferedDecompositionPrimitive2D::get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const
		{
			::osl::MutexGuard aGuard( m_aMutex );

			if(!getBuffered2DDecomposition().hasElements())
			{
				const Primitive2DSequence aNewSequence(create2DDecomposition(rViewInformation));
				const_cast< BufferedDecompositionPrimitive2D* >(this)->setBuffered2DDecomposition(aNewSequence);
			}

			return getBuffered2DDecomposition();
		}
	} // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////
// tooling

namespace drawinglayer
{
	namespace primitive2d
	{
        // convert helper stl vector of primitives to Primitive2DSequence
        Primitive2DSequence Primitive2DVectorToPrimitive2DSequence(const Primitive2DVector& rSource, bool bInvert)
        {
            const sal_uInt32 nSize(rSource.size());
            Primitive2DSequence aRetval;
        
            aRetval.realloc(nSize);

            for(sal_uInt32 a(0); a < nSize; a++)
            {
                aRetval[bInvert ? nSize - 1 - a : a] = rSource[a];
            }

            // all entries taken over to Uno References as owners. To avoid
            // errors with users of this mechanism to delete pointers to BasePrimitive2D
            // itself, clear given vector
            const_cast< Primitive2DVector& >(rSource).clear();

            return aRetval;
        }

		// get B2DRange from a given Primitive2DReference
		basegfx::B2DRange getB2DRangeFromPrimitive2DReference(const Primitive2DReference& rCandidate, const geometry::ViewInformation2D& aViewInformation)
		{
			basegfx::B2DRange aRetval;

			if(rCandidate.is())
			{
				// try to get C++ implementation base
				const BasePrimitive2D* pCandidate(dynamic_cast< BasePrimitive2D* >(rCandidate.get()));

				if(pCandidate)
				{
					// use it if possible
					aRetval.expand(pCandidate->getB2DRange(aViewInformation));
				}
				else
				{
					// use UNO API call instead
					const uno::Sequence< beans::PropertyValue >& rViewParameters(aViewInformation.getViewInformationSequence());
					aRetval.expand(basegfx::unotools::b2DRectangleFromRealRectangle2D(rCandidate->getRange(rViewParameters)));
				}
			}

			return aRetval;
		}

		// get B2DRange from a given Primitive2DSequence
		basegfx::B2DRange getB2DRangeFromPrimitive2DSequence(const Primitive2DSequence& rCandidate, const geometry::ViewInformation2D& aViewInformation)
		{
			basegfx::B2DRange aRetval;

			if(rCandidate.hasElements())
			{
				const sal_Int32 nCount(rCandidate.getLength());

				for(sal_Int32 a(0L); a < nCount; a++)
				{
					aRetval.expand(getB2DRangeFromPrimitive2DReference(rCandidate[a], aViewInformation));
				}
			}

			return aRetval;
		}

		bool arePrimitive2DReferencesEqual(const Primitive2DReference& rxA, const Primitive2DReference& rxB)
		{
			const sal_Bool bAIs(rxA.is());

			if(bAIs != rxB.is())
			{
				return false;
			}

			if(!bAIs)
			{
				return true;
			}

			const BasePrimitive2D* pA(dynamic_cast< const BasePrimitive2D* >(rxA.get()));
			const BasePrimitive2D* pB(dynamic_cast< const BasePrimitive2D* >(rxB.get()));
			const bool bAEqualZero(pA == 0L);

			if(bAEqualZero != (pB == 0L))
			{
				return false;
			}

			if(bAEqualZero)
			{
				return false;
			}

			return (pA->operator==(*pB));
		}

		bool arePrimitive2DSequencesEqual(const Primitive2DSequence& rA, const Primitive2DSequence& rB)
		{
			const sal_Bool bAHasElements(rA.hasElements());

			if(bAHasElements != rB.hasElements())
			{
				return false;
			}

			if(!bAHasElements)
			{
				return true;
			}

			const sal_Int32 nCount(rA.getLength());

			if(nCount != rB.getLength())
			{
				return false;
			}

			for(sal_Int32 a(0L); a < nCount; a++)
			{
				if(!arePrimitive2DReferencesEqual(rA[a], rB[a]))
				{
					return false;
				}
			}

			return true;
		}

		// concatenate sequence
		void appendPrimitive2DSequenceToPrimitive2DSequence(Primitive2DSequence& rDest, const Primitive2DSequence& rSource)
		{
			if(rSource.hasElements())
			{
				if(rDest.hasElements())
				{
					const sal_Int32 nSourceCount(rSource.getLength());
					const sal_Int32 nDestCount(rDest.getLength());
					const sal_Int32 nTargetCount(nSourceCount + nDestCount);
					sal_Int32 nInsertPos(nDestCount);

					rDest.realloc(nTargetCount);

					for(sal_Int32 a(0L); a < nSourceCount; a++)
					{
						if(rSource[a].is())
						{
							rDest[nInsertPos++] = rSource[a];
						}
					}

					if(nInsertPos != nTargetCount)
					{
						rDest.realloc(nInsertPos);
					}
				}
				else
				{
					rDest = rSource;
				}
			}
		}

		// concatenate single Primitive2D
		void appendPrimitive2DReferenceToPrimitive2DSequence(Primitive2DSequence& rDest, const Primitive2DReference& rSource)
		{
			if(rSource.is())
			{
				const sal_Int32 nDestCount(rDest.getLength());
				rDest.realloc(nDestCount + 1L);
				rDest[nDestCount] = rSource;
			}
		}

	} // end of namespace primitive2d
} // end of namespace drawinglayer

//////////////////////////////////////////////////////////////////////////////
// eof